A new approach for designing frequency reconfigurable wire antennas is proposed. In particular, it is shown that the antenna input impedance and reflection coefficient can be tuned by properly engineering the radius and the surface impedance of a coating metasurface. This mechanism is exploited to design a reconfigurable dipole antenna coated by multi-layered metasurfaces loaded with varactor diodes. By tuning the capacitance of the varactors, the operative frequency band of the antenna can be dynamically and continuously shifted within a broad range of frequencies, while still preserving a stable omnidirectional radiation pattern and not perturbing the antenna gain.

Vellucci, S., De Sibi, D., Monti, A., Barbuto, M., Toscano, A., Bilotti, F. (2021). Multi-layered metasurfaces enabling frequency reconfigurability in wire antennas. In 2021 34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021 (pp.1-4). Institute of Electrical and Electronics Engineers Inc. [10.23919/URSIGASS51995.2021.9560378].

Multi-layered metasurfaces enabling frequency reconfigurability in wire antennas

Vellucci S.;Monti A.;Toscano A.;Bilotti F.
2021

Abstract

A new approach for designing frequency reconfigurable wire antennas is proposed. In particular, it is shown that the antenna input impedance and reflection coefficient can be tuned by properly engineering the radius and the surface impedance of a coating metasurface. This mechanism is exploited to design a reconfigurable dipole antenna coated by multi-layered metasurfaces loaded with varactor diodes. By tuning the capacitance of the varactors, the operative frequency band of the antenna can be dynamically and continuously shifted within a broad range of frequencies, while still preserving a stable omnidirectional radiation pattern and not perturbing the antenna gain.
978-9-4639-6-8027
Vellucci, S., De Sibi, D., Monti, A., Barbuto, M., Toscano, A., Bilotti, F. (2021). Multi-layered metasurfaces enabling frequency reconfigurability in wire antennas. In 2021 34th General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2021 (pp.1-4). Institute of Electrical and Electronics Engineers Inc. [10.23919/URSIGASS51995.2021.9560378].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/404309
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